Rosenburg, C. P. 1990b. Barn owl nest site and nest box monitoring program. Pages 76-81 in Virginia Nongame and Endangered Wildlife Investigations, 1990 Annual Report. Virginia Department Game and Inland Fish. Richmond, Virginia.

Taylor, C. M., and R. J. Miller. 1990. Reproductive ecology and population structure of the plains minnow, Hybognathus placitus (Pisces: Cyprinidae), in central Oklahoma. American Midland Naturalist 123:32-39.

Moseley, R. and C. Groves. 1990. Rare, threatened and endangered plants and animals of Idaho. Natural Heritage Section, Nongame and Endangered Wildlife Program, Idaho Dept. of Fish and Game. 33 pp.

Brown, B.A. 1990. Plant/Animal Occurrence Record (cooperators form) for Falco femoralis septentrionalis sighting. 19 November, 1990.

Daly, L. Parker, M. (1990) 1990 Mexican Spotted Owl Inventory Form. Sandia Ranger District, Cibola National Forest, USFS. 30 p.

Choquenot, D., B. Kay, and B. Lukins. 1990. An evaluation of warfarin for the control of feral pigs. J. Wildl. Manage. 54:353-359.

Johnson, E.D. Zwank, P.J. (1990) Final Report, Flammulated Owl Bioogy on the Sacramento Unit of the Lincoln National Forest. Study Completion Report. Linxoln Supervisor's Office, Lincoln National Forest, USFS. 75 p.

Spellenberg, R. 1990. Report on a survey for threatened and endangered plant species in the vicinity of Burris Well, White Sands Missile Range, for the Directed Energy Weapons Test. 5 April 1990. 14 pp.

Hays, R.L., and A.H. Farmer. 1990. Effects of the CRP on wildlife habitat: emergency haying in the Midwest and pine plantings in the Southeast. Transactions of the North American Wildlife and Natural Resources Conference 55:30-39.

Knight, R. L., and D. P. Anderson. 1990. Effects of supplemental feeding on an avian scavenging guild. Wildl. Soc. Bull. 18:388-394.

Nichols, J. D., J. A. Spendelow, and J. E. Hines. 1990. Capture-recapture estimation of prebreeding survival rate for birds exhibiting delayed maturation. J. Field Ornithology 61:347-354.

Smith, H. M., C. E. Bock, and J. H. Bock. 1990. Notes on reproduction and coloration in the bunchgrass lizard, Sceloporus scalaris, in southeastern Arizona. Bull. Maryland Herp. Soc. 26(2):64-67.

Burger, J., and M. Gochfeld. 1990. The black skimmer: the social dynamics of a colonial species. Columbia Univ. Press, New York. 416 pp.

Painter, C. 1990. Locality of Crotalus willardi obscurus in Peloncillo Mountains. Hand drawn from U.S.G.S. Guadalupe Canyon Ariz-NM and Apache AZ-NM quadrangle, 15 min series - 19 and attached xeroxed 15 min. topo map.

Hoffman, J. E. 1990. Status survey of seven land snails in the Mineral Hills and the Pinaleno Mountains, Arizona. Prepared for U.S. Fish and Wildlife Service, Phoenix, Arizona. Contract No. 20181-88-00973.

Tims, P. 1990. "Cirsium vinaceum." Threatened, Endangered, and Sensitive Plants Observation Record. USDA Forest Service, NM.

Dijak, W. D., B. Tannenbaum, and M. A. Parker. 1990. Nest-site characteristics affecting success and reuse of red-shouldered hawk nests. Wilson Bull. 102:480-486.

Houston, C. S. 1990. Saskatchewan Swainson's hawks. Am. Birds 44:215-220.

Pattee, O. H., et al. 1990. Lead hazards within the range of the California condor. Condor 92:931-937.

Solis, D. M., Jr., and R. J. Gutierrez. 1990. Summer habitat ecology of northern spotted owls in northwestern California. Condor 92:739-748.

Armistead, H. T. 1990. Notes on black rails on the Delmarva Peninsula, especially in Dorchester County. Unpublished report. Maryland. Maryland Department of Natural Resources, Annapolis, Maryland. 6 pp.

Brooks, J. E. 1990. Conservation Plan for the aquatic resources of Bitter Lake National Wildlife Refuge, New Mexico.

U.S. Fish and Wildlife Service (USFWS). 1990. Emergency rule to list the golden-cheeked warber as endangered. Federal Register 55(87):18844-5.

Mongold, R. 1990. Letter from Roger Mongold to Ellen De Bruin. Aug. 1990 and notes from discussion with Robin Fisher 91-02-28.

Williams, S.O. and D.J. Cleary. 1990. Bird survey - Guadalupe Canyon, HIdalgo Co., NM 4-5 June 1990.

Tostain, O., J.-L. Dujardin, C. Erard, and J.-M Thiollay. 1990. Oiseaux de Guyane. Société d'Etudes Ornithologiques, Brunoy, France.

Rusch, D. R., et al. 1990. Population ecology and harvest of the American black duck: a review. Wildl. Soc. Bull. 17:379-406.

Best, T. L., et al. 1990. Ammospermophilus harrisii. Am. Soc. Mamm., Mammalian Species No. 366:1-7.

Currens, K. P., C. B. Schreck, and H. W. Li. 1990. Allozyme and morphological divergence of rainbow trout (Oncorhynchus mykiss) above and below waterfalls in the Deschutes River, Oregon. Copeia 1990:730-746.

Hall, S.A. 1990. Pollen evidence for historic vegetational change, Hueco Bolson, Texas. The Texas Journal of Science. 42(4):399-403.

Kaufman, K., and R. Bowers. 1990. The practiced eye: Curve-billed Thrasher and Bendire's Thrasher. American Birds 44(3):359-362.

Morton, E. S., and K. C. Derrickson. 1990. The biological significance of age-specific return schedules in breeding purple martins. Condor 92:1040-1050.

Stromberg, M. R. 1990. Habitat, movements and roost characteristics of Montezuma quail in southeastern Arizona. Condor 92:229-236.

Debruin, E. 1990. Field notes on Mammilaria wrightii var. Wilcoxii, Gray Ranch - Black Bill Slope Macrosite. Natural Heritage New Mexico.

Apa, A.O., D.W. Uresk and R.L. Linder. 1990. Black-tailed prairie dog populations one year after treatment with rodenticides. Great Basin Naturalist 50(2):107-113

Burger, L. W., Jr., E. W. Kurzejeski, T. V. Dailey, and M. R. Ryan. 1990. Structural characteristics of vegetation in CRP fields in northern Missouri and their suitability as bobwhite habitat. Transactions of the North American Wildlife Conference 55:75-8

Franzreb, K.E. 1990. An analysis of options for reintroducing a migratory, native passerine, the endangered Least Bell's Vireo in the Central Valley, California. Biological Conservation 53(2):105-124.

Hussell, D. J. T. 1990. Implications of age-dependent bill length variation in EMPIDONAX for identification of immature alder and willow flycatchers. Journal of Field Ornithology 61:54-63.

Nesbitt, S. A., and K. S. Williams. 1990. Home range and habitat use of Florida sandhill cranes. Journal of Wildlife Management 54:92-96.

Safina, C. 1990a. Foraging habitat partitioning in roseate and common terns. Auk 107:351-358.

Tyus, H. M., and C. A. Karp. 1990. Spawning and movements of razorback sucker, Xyrauchen texanus, in the Green River basin of Colorado and Utah. Southwestern Naturalist 35:427-433.

Novak, P. G. 1990. Population status of the black tern (CHLIDONIAS NIGER) in New York state, 1989. New York Sate Dept. of Environmental Conservation, Division of Fish and Wildlife, Nongame Unit, Delmar, NY. 30 pp.

Burns, B. Tudek, B. (1990) Collected Mexican Spotted Owl Forms. Silver City Ranger District, Gila National Forest, USFS. 68 p.

New Mexico Department of Game and Fish. 1990. Checklist of the Amphibians of New Mexico.

Christiansen, J. L., B. J. Gallaway, and J. W. Bickham. 1990. Population estimates and geographic distribution of the yellow mud turtle (Kinosternon flavescens) in Iowa. Journal of the Iowa Academy of Science 97:105-108.

Knapp, M. (1990) Unpublished letter to District Ranger, Subject: Angostura Creek. Retrieved from Regional Office, USFS. 6 p.

Sullivan, R.M. and Richard A. Smartt. 1990. Survey of the Colorado chipmunk (Eutamias quadrivittatus), Oscura Mountain land snail (Oreohelix socorroensis), and other flora and fauna in the southern Oscura, Mockingbird, Fairview, and Sheep Mountains, White

Heinrich, J. W., and S. R. Craven. 1990. Evaluation of three damage abatement techniques for Canada geese. Wildl. Soc. Bull. 18:405-410.

Larter, N. C., and C. C. Gates. 1990. Home ranges of wood bison in an expanding population. J. Mamm. 71:604-607.

Muldavin, E. 1990. Gray Ranch vegetation survey, 1990. New Mexico Natural Heritage Program

Noble, D. G. and J. E. Elliott. 1990. Levels of contaminants in Canadian raptors, 1966 to 1988; Effects and temporal trends. Can. Field-Nat. 104:222-243.

Smith, J. P., S. W. Hoffman, J. A. Gessaman. 1990. Regional size differences among fall-migrant accipiters in North America. J. Field Ornithol. 61:192-200.

Campbell, R. W., N. K. Dawe, I. McTaggart-Cowan, J. M. Cooper, G. W. Kaiser, and M. C. McNall. 1990b. The birds of British Columbia. Volume 2. Nonpasserines: diurnal birds of prey through woodpeckers. University of British Columbia Press, Vancouver, B.C.

Turner, R. (1990). Area survey results for Corphantha[sic] sneedii var sneedii. Guadalupe RD, Lincoln NF, USFS. 1 p.

Floyd-Hanna, L. et.al. Gilia formosa population study. Unpub. research proposal for BLM - Farmington office. Post-1989.

Kartesz, J. 1990. Synonymized checklist of the vascular flora [of North America north of Mexico, and Hawaii]. Unpublished second review draft.

Todsen, Thomas K. 1990. T and E survey of the Oscura Mountains. 4 August 1990.

Debruin, E. 1990. Field notes from August and September, 1990. New Mexico Natural Heritage Program.

Dixon, K. L. 1990. Constancy of margins of the hybrid zone in titmice of the PARUS BICOLOR complex in coastal Texas. Auk 107:184-188.

Jackson, D. D. 1990. Orangetooth is here to stay. Audubon, July 1990, pp. 89-94.